I have something similar called forearm forklifts... two wide nylon straps with loops on each end that you slide over your forearm to your elbows. Makes team lifting so much safer and easier!
Oh, and yes... that little comment about 30k in back surgeries... that’s why I said what I did about free lifting one: Do Not! I didn’t have a choice; it was neither fun nor safe and I definitely think had I tried turning or stepping I would have been on the ground. As it was I was just unstacking them and using my body as a fulcrum to ease it to the ground in its box.